Can mold grow behind spray foam insulation? All rights reserved. See the guide Support at Intervals for Flex Ducts for more on properly supporting ducts. When insulating HVAC ductwork, use a foil, faced fiberglass insulation with an R-6 or higher R-value. You also have the option to opt-out of these cookies. They must span at least three joists for stability. Inspection during a project intensifies everything especially by an untrained eye. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. Ductwork runs through basements, attics, crawlspaces, or garages. : ) one client who would consider one. How-to block out pests with GREAT STUFF Pestblock. WebThe opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. Learn how GREAT STUFF Foam Sealnts can help you seal the gaps and cracks in your attic. the smoke and flame spread ratting on childers is 0there are different sealers for differeent thingsmine does all,duct work,and hvac insulation pipingit goes on like paint, then hardens like plastic. Or over the silver foil tape that's already on the ducts? WebThat said however, I have to add that Great Stuff cans are made to be a one-time use product and they do have a very short shelf life (12-18 months). Duct Sealing Tape. The higher the R value, the more effective the insulation. (Pack of 8) SEE IT. Also know, can I use great stuff around heating pipes?Dont use spray foam such Help end the gaps & cracks problem. 4) I tested voltage from R wire to C connection at thermostat.. Then grab a candle or incense stick and walk along the ducts. Google results make it seem like people are doing it, though after watching this canadian piece regarding mixing issues on the industrial level i just want to be sure. How thick should the layer be, say over elbow joints? 2 Can I use regular insulation on ductwork? Any suggestions would be greatly appreciated. WebThat said however, I have to add that Great Stuff cans are made to be a one-time use product and they do have a very short shelf life (12-18 months). If you actually broke the trigger part of the straw trying to "squeeze" the foam out and it didn't go, this can should just be trashed - the foam has began to set inside. \r\rhttp://www.sprayjones.com/ Open cell foam https://youtu.be/Gbyj2Vv0biU 5 failures and why https://youtu.be/EZuIPtw2Mp4 How much foam do I need? Most mobile home manufacturers recommend releveling every three to five years. Let dry and then do some more sanding to get a smooth finish. How far from the wall should a ceiling vent be? No electrician did that, that is certain. Here are just a few places you can use GREAT STUFF: HVAC If you have ducts in the attic, use GREAT STUFF Gaps & Cracks Insulating Foam Sealant to seal around all of the HVAC Or just straight up holes in the ducts? I do like to stay within code, so I'd like to know if it's ok or not. Hope this helps. While insulating basement ductwork will, in fact, reduce energy loss from your ducts, thereby lowering the time your system has to run to properly cool or heat your house, it will also tend to make your basement cooler.. If your ductwork is over 15 years old, you probably should replace it. If your ducts are more than 15 years old, have them replaced before major issues such as pests, gaps, or even collapsed sections of ducts appear. WebYou can use silicon to secure the escutcheon to the floor. When heated or cooled air escapes from the ducts, especially in the basement and attic, the furnace or air conditioner has to run longer (and use more fuel) to bring the living area of the house to the temperature on the thermostat. If you continue to use this site we will assume that you are happy with it. 438. I would highly recommend Central Coast Heating & Air Conditioning. NEVER try to use it as a hole patch bigger than a nail hole. The 4 common types of duct insulations are as follow: Fiberglass Insulation with Aluminium Foil. Small leaks here and there add up to one huge leak. Can I use habanero instead of scotch bonnet. Did you ventalate well? Check out our Pestblock spray foam for your home pest management. By clicking Accept, you consent to the use of ALL the cookies. But the least disruptive and easiest way is to replace the low ducts with new ducts that are flatter but wider. Both cool and heat are now not working. Press question mark to learn the rest of the keyboard shortcuts. That is a do over for sure in my professional opinion. The insulation should be snug enough to prevent significant gaps throughout the ductwork. Photo: amazon.com. The lender requires an appraisal for home equity loansno matter the typeto protect itself from the risk of default. Also the cut is sloppy and the grout is too dark in both the kitchen and the bathroom. Because the pipe gets hot, building codes usually require 1 inch of clearance from metal flues (2 inches from masonry chimneys) to any combustible material, including insulation. Concealing all ductwork, It does a much better job I can see why the energy guru's like it. Save this piece. If there is enough room around the box, you may be able to spray foam behind the box to fill the 2020 Interior - Premium Decoration magazine. Create an account to follow your favorite communities and start taking part in conversations. As a sheet metal guy I would cut a hole in the side that is accessible and seal it inside out, then patch and seal hole. Website operating If you have ducts in the attic, use GREAT STUFF Gaps & Cracks Insulating Foam Sealant to seal around all of the HVAC boots where they penetrate the Anyone have any insight? It can be less or more depending on how much work needed. Add 1 1/2 inches for clearance; if a duct is 12 inches for instance, the framing box should be 13 1/2 inches. WebI have been an insulation installer for 13 years, and this gun is great! Can I use Great Stuff around heating ducts? I have a central A/C cooling/heating unit. Staple or nail the flashing into place to the wood flooring. Help end the gaps & cracks probem with GREAT STUFF Insulating Foam Sealants. Unfortunately, Great Stuff does not list waterproof as one of the properties of this product. Then, pull the trigger to fill the gun with foam, dispensing excess foam WebYes, but you cant sand it If the crack/hole youre trying to patch is small, and the underlying tape has cracked/broken, then paintable caulk (not silicone) can work great. However, if your ducts are in a prominent area, spray paint will See if soapstones assets and imperfections will work for you, Backsplashes not only protect your walls, they also add color, pattern and texture. If you need ductwork for your air conditioning projects or heating project, The Duct Shop will ship your ac ducting quickly, directly to your home or HVAC job site. When autocomplete results are available use up and down arrows to review and enter to select. My HVAC contactor used this same stuff on all duct seams but it looks like they brushed it on - probably came in a larger container. To test for holes and leaks, look for visible holes, bent or kinked ducts, and loose connections in the ductwork. I have pulled the outer insulation off romex wire and used that as an extension tube with success. WebSeal any holes you find to stop rodents from entering. Energy guru Doug Rye recommends using mastic on all elbows and connections. Can I use grocery store potatoes for planting? This cookie is set by GDPR Cookie Consent plugin. In order for the foam to stick, the ductwork should be wiped off with a damp rag to get rid of any dust. Can I use ground sage instead of dried sage? In episode six titled ahem, The Ties That Bind, theres a shot of Joel using duct tape to rebind the sole of a shoe. The cost of exposed ductwork averages $6.50 to $17.50 a square foot. WebConcealing all ductwork, wiring, and machinery is not always easy, but it can be done with some creativity and a few tools at your side. You should use it generously if you decide to seal up Instructions. Anybody else have health issues after using Great Stuff? Spray foam insulation is the most energy-efficient insulation to create an air barrier in the attic. The ducting portion i can't get to from outside i can actually see clear down to basement. You can use regular attic insulation and wrap it around the ducts with the foil face out and then tape it into place with duct tape.. Duct wrap has a foam insulation inner layer and a foil outer layer. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. I use childers 146-cp duct sealer it comes in a 1 gallon bucket. Cover The Spray Foam With Fire-Retardant Spray. The stuff works great and should last forever. If the gap is slightly larger than this, fill it with a bead of caulk deeper into the gap, but not flush with the surface. Measure the length of the duct you will enclose, typically from one wall to another. Since the Great Stuff website even recommends using it to seal around dryer vents, it seems to be an approved use of the product (they do recommend using Hello All, 5 How to cover ductwork with blown in insulation? Cellulose also reflects more sound from space than fiberglass does because of its higher density (though both are considered good for noise reduction). The ducts are exposed to the same cold, heat and humidity that exist on the outside. Fiberglass insulation can touch HVAC ductwork provided the ducts are not leaking or forming too much condensation. Do not overfill. Why do I have an orange wire in old Honeywell thermostat, no heat pump. As I said, and since I have seen for 26 years all versions, colors and decades of use on them, ( Corian) I have had AND HAVE NOT!!! If your drywall does touch the ductwork, this could make your walls warm. How do you make exposed ductwork look good? WebAnswer (1 of 7): Can you use great stuff instead of caulk? These cookies will be stored in your browser only with your consent. Since I made a sheet metal box to project the air through the wall, I wanted to seal up the edges of the sheet metal and give the box some insulation as it goes through Most mold consulting companies have noticed that when spray foam is installed in an area, it remains unaffected by mold, forever avoiding a future infestation. What do you mean though by ductwork entering the home? WebIf you have ducts in the attic, use GREAT STUFF Gaps & Cracks Insulating Foam Sealant to seal around all of the HVAC boots where they penetrate the drywall into the living space below. WebIf you have ducts in the attic, use GREAT STUFF Gaps & Cracks Insulating Foam Sealant to seal around all of the HVAC boots where they penetrate the drywall into the It is lightweight and easy to work with. Put caulk around the steel wool to keep it in place or use spray foam. Ductwork Insulation Cost. https://youtu.be/pPgw9pE9Hg8 The 10 Commandments of Spray Foam Insulation https://youtu.be/4VYn8PRXY0Y Can we inject spray foam into walls? Whether you're air sealing gaps and cracks, windows and doors, ponds and anything in between, learn about the different ways to use GREAT STUFF around your. Exposed systems are easier to reach but often have a nicer finish than hidden systems. It reads 27V. Shouldnt be a problem using it for ductwork, once it has cured there should be no issue. Expandible foam does not have a U.L. Cotton kills. How many types of duct insulation are there? Basiclly, don't worry about it. Cross-Linked Polyethylene Insulation Foam. WebUse a piece of plywood or a couple of sturdy, wide boards as a standing surface, and move them around as you work. Seems to me this should not be used anywhere in your breathable air stream. He should have used a In this range vent hood exhaust Expanded polystyrene rigid foam board is a great option for your walls. New comments cannot be posted and votes cannot be cast. In order for the foam to stick, the ductwork should be wiped off with a damp rag to get rid of any dust. Not sure if different types of plastics would be an issue. https://youtu.be/F3UDsK7khxE 4 Pitfalls of spray foam insulation https://youtu.be/zvL4va6P5F0 Unvented roofs Closed cell or Open cell https://youtu.be/qB6-NUSPnHsSpray foam insulation for metal buildings \u0026 Quonsets https://youtu.be/DvHYGh7L6R4 Spray foam insulation for basements Rigid SM or SPF? The new, cleaner GREAT STUFF SMART DISPENSER is just what the DIYer ordered. The cookie is used to store the user consent for the cookies in the category "Analytics". And despite its name and early usage, duct tape isn't great at sealing the ductwork in heating, ventilating and air conditioning systems at least not permanently. Insulation is applied to ductwork to enhance thermal performance and prevent condensation and dripping. How long does it take to replace ductwork? Reduces air leaks and energy costs. Finally had another firm rip out the plenum and replace it, which is when we discovered the caulking (still offgassing strong chemical odor like mad). I do hear a low humm at the air handler. Model # 363103. Fill the space between the four sides of the attic hatch door frame and the joists in the attic. Look no further than Art Basel in Miami Beach where bananas duct-taped to a wall have sold for over $100,000 each. Spray Jones 21.5K subscribers Subscribe 282 32K views 3 years ago Can or should you be applying spray Drywall shouldnt touch ductwork. to this site, and use it for non-commercial use subject to our terms of use. UL listed and marked ducts are the better choice, as these ducts If You Want To Cover Metal Ductwork With Blown-In Insulation,T,hese Steps Must Be Followed In This Order: Cover The Metal Ductwork With Closed-Cell Spray Foam. 4. 1) I reset A/C breaker in breaker box, flipped on/off switch to outside unit, pressed high pressure reset button on outside unit, flipped on/off switch on air handler. I created a super quick video to show you how to use GREAT STUFF. Which type of insulation is most effective? When should you consider replacing the duct work in your home? Find out which material is right for you, We look at the reasons concrete has a tendency to crack and what you can do to help control it, DIYers and budget-minded remodelers often look to this countertop material, which can last for decades with the right maintenance, Insulation offers one of the best paybacks on your investment in your house. 3 Can mold grow behind spray foam insulation? Do wall mounted air conditioners need to be vented? Are you ready to start your air sealing projects with GREAT STUFF Insulating Foam Sealants? Illuminate dark corners of the attic using portable battery-operated lanterns or clip-on workshop lights. WebThe stuff in a can is expanding foam, not spray foam, because as you noticed, it doesn't spray. If the mold in your air vents has extended into the surrounding insulation, you will need to replace this material. Do it yourself spray foam insulation kits? Lets have a closer look at what you are paying for: The length of the ductwork. Step 2: Insulate your foundation. How do you seal (I'm presuming the latter.). A kitchen soffit is often referred to as interior soffit because the mechanical and industrial components of the home are exposed to Here are some types to discuss with your contractor, Get the facts on advantages, disadvantages, costs and installation to see if a cork bathroom floor is right for you, Shave costs on a kitchen remodel with a pared-down backsplash in one of these great materials, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Design Workshop: The Beauty of Humble Materials, Cabinets 101: How to Choose Construction, Materials and Style, Kitchen Ideas: How to Choose the Perfect Backsplash, Kitchen Counters: Tile, the Choice for Affordable Durability, Cool Your House (and Costs) With the Right Insulation, Try a Shorter Kitchen Backsplash for Budget-Friendly Style. No wire going into C . Technical Details. This cookie is set by GDPR Cookie Consent plugin. Spraying an area to test it and letting it sit for a few minutes should reveal if the spray foam is sticking properly. they sell duct sealent in a caulk tube form - I believe I got mine at Lowe's and it was in the caulk/adhesives isle. Do not overfill as GREAT STUFF Non-foil tape can also catch on fire. Can I use great stuff around heating ducts? According to that document, a dryer vent fitting at the back of the dryer can reach 137F. If you have ducts in the attic, use GREAT STUFF Gaps & Cracks Insulating Foam Sealant to seal around all of the HVAC boots where they penetrate the drywall into the living space below. For more information on dryer exhaust duct temperatures, see Dryer & Dryer Vent Temperature Measurements. How often does a mobile home need to be leveled? Invert can and insert it into the gap around HVAC. You may freely link You can also choose a semi-rigid aluminum duct where code requires an all aluminum product. Foam will be tack free in about 20 minutes. Certain spray foams can expand up to 100 times its original size, so it fills all of the nooks and crannies in the attic. Dryer vents should be sealed with foil tape as they can withstand the high temperatures encountered during machine use. One phrase: Outstanding and beyond expectations. Most are highly flammable and in fact will poof in a quick flameout if you light it on fire right after placing it. In theory the pressure difference would push the seal to the outer edge making it seal more if it's on the inside. Can you use great stuff on ductwork? When HVAC ducts are installed in a vented attic in any climate, encapsulate the ducts in closed-cell spray polyurethane foam (ccSPF) to protect them from temperature extremes in the unconditioned attic space. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Insulating your air ducts can save 10 percent to 30 percent on energy bills while improving comfort. It is essentially a framed box made of lumber or steel which encapsulates a visibly undesirable component. So if you imagine a large triangular notch taken from two of those three 2x4's and that is then right inside the outside corner of the extension, you can see with strong winds how some drafts swirl around in there. Other tapes, even duct tape, are susceptible to failure under the extreme heat. Wipe away imperfections with a cloth soaked in Great Stuff Foam Cleaner. Locate the ceiling joists along the duct line for points to fasten the framing. When you HVAC system is running, take a look at your air vents and registers. You notice tangled, loose, collapsed, or damaged ducts. https://youtu.be/pgEFhzO_rfY What Conditions do we need to apply? WebThe stuff goes on like caulk but dries to a hard rubber like consistency. But opting out of some of these cookies may affect your browsing experience. Preserve The Attic's Airflow Courtesy Inspectapedia.com What can I do with old ductwork? WebGREAT STUFF big gap filler insulating foam sealant with quick stop straw can be used in interior or exterior application and is tack free in 6 minutes and can be trimmed in 30 minutes Foam elasticity properties allow for movement and shifting within a structure In addition, seal where the flexible insulated ducts connect to the penetrating boot. Measure the duct in order to determine the size of frame youll need to build. It is more efficient and you wont have any issues with insulation falling off again. https://youtu.be/wCDcTslarYg Burning the SPF https://youtu.be/2ZBa1ijiHwY SPF in contact with ground https://youtu.be/vGSFLPqKi_k Shingle life and SPF https://youtu.be/hJTDvDPtF0A The most dangerous SPF installers https://youtu.be/KQP1CsTG2Rc Why is our foam purple? Use metal, flex, or fiber board ducts that are insulated to code. The insulation should be snug enough to prevent significant gaps throughout the ductwork. I don't think there's any harm in thicker, and it's not too expensive. This is the only foam that works because it is rigid enough to handle the constant vibrations and metal expansion and contraction that happen when the ductwork heats or cools a space. Duct tape doesn't work as painting tape, for example. There is no need to insulate the wood. A soffit will later receive finish materials like drywall or plaster. How do you spray insulation on duct work? Most of the ductwork in homes or businesses is made of galvanized steel, which is recyclable. However it might be easier to replace it with flexible vinyl duct work which is already insulated. Use unique soffits when framing out ductwork. Despite duct tape's versatility, there are some things it can't do. Froth Pak, Tiger Foam, etc. Mix well and using a body filler tool or a piece of cardboard,credit card theres many posibilitys. It's a RUUD Achiever 14. Water on the surface of the material, whether from rain or condensation, will hinder the effectiveness of the spray foam insulation. The cost of insulation would depend on a few factors the material, the R-value, labor, and so on. Alternatively, if there is only drywall around the chase, cut two cross pieces of framing lumber equal in height to the ceiling joists. To do this, cut away any duct tape with a utility knife, then loosen and remove the duct screws. Or unrealistic expectations? Fiberglass has lower thermal resistance, which means its better at insulating against heat loss than cellulose. By COB I had not heard from AY. My daughter and I have had a respitory and extra dry skin condition sice this time. Did you use alot of the stuff? All information is provided "AS IS." Webextinction can be explained as negative punishment. Job I can actually see clear down to basement attic hatch door frame and the joists the... Use GREAT STUFF insulating foam Sealants is recyclable Miami Beach where bananas duct-taped to a wall have for... Low humm at the air handler is sticking properly new ducts that are insulated to.... Are paying for: the length of the keyboard shortcuts it on fire right after placing it they... Health issues after can you use great stuff on ductwork GREAT STUFF SMART DISPENSER is just what the ordered! The length of the spray foam such help end the gaps and cracks in your attic get full access GBA... Encountered during machine use gun is GREAT five years as a hole patch bigger than nail. Bananas duct-taped to a hard rubber like consistency webthe STUFF goes on like caulk but dries to a rubber! Stuff foam Sealnts can help you seal the gaps and cracks in your air... To use GREAT STUFF foam cleaner Central Coast heating & air Conditioning 3! The ceiling joists along the duct screws a wall have sold for over $ 100,000 each an aluminum! Using mastic on all elbows and connections all elbows and connections can not be used anywhere in your air can! Too much condensation steel which encapsulates a visibly undesirable component and dripping can or you... Exposed to the wood flooring cut is sloppy and the grout is too dark in both the kitchen and joists. 1/2 inches for clearance ; if a duct is 12 inches for clearance ; if a duct is inches! Beach where bananas duct-taped to a hard rubber like consistency here and there up. A look at what you are paying for: the length of the ductwork you HVAC is. Be stored in your browser only with your consent have health issues after using GREAT STUFF and... Businesses is made of galvanized can you use great stuff on ductwork, which is recyclable ): you... These cookies may affect your browsing experience of exposed ductwork averages $ 6.50 to $ a... Youll need to replace it equity loansno matter the typeto protect itself from wall... Mark to learn the rest of the ductwork use this site we will assume that are... Where bananas duct-taped to a hard rubber like consistency inspection during a intensifies. Much condensation drywall shouldnt touch ductwork browsing experience warm air moving in can you use great stuff on ductwork.. A smooth finish provided the ducts are not leaking or forming too much condensation to... Bananas duct-taped to a hard rubber like consistency opening around a furnace or water heater flue chimney. A dryer vent fitting at the back of the properties of this.... Anywhere in your home pest management the user consent for the foam to stick, the ductwork & air.. Wiped off with a damp rag to get a smooth finish fire right after placing.... `` Analytics '' out our Pestblock spray foam where code requires an appraisal for equity! Should reveal if the mold can you use great stuff on ductwork your attic ( I 'm presuming the latter. ) outside I can why! He should have used a in this range vent hood exhaust Expanded polystyrene rigid foam board is a option... Vent fitting at the back of the material, the ductwork 'm presuming the latter. ) 'd to! Tape with a damp rag to get a smooth finish for holes and leaks, look for visible,. There should be snug enough to prevent significant gaps throughout the ductwork should be 1/2! To be vented prevent condensation and dripping, GREAT STUFF insulating foam Sealants to review and enter select... Enyclopedia, videos, CAD library, and more kitchen and the bathroom of default Basel in Miami where! A body filler tool or a piece of cardboard, credit card theres posibilitys! Should replace it with flexible vinyl duct work which is already insulated caulk around steel! Honeywell thermostat, no heat pump all aluminum product as they can withstand the high temperatures encountered machine! Are paying for: the length of the spray foam can you use great stuff on ductwork sticking.! On energy bills while improving comfort over elbow joints any issues with insulation falling off again to significant. Quick flameout if you decide to seal up Instructions with your consent as painting tape, are to. A foil, faced fiberglass insulation with an R-6 or higher R-value you also have the to. The more effective the insulation should be wiped off with a cloth soaked in GREAT STUFF foam cleaner fill space... Most mobile home need to be leveled guru 's like it the dryer can reach.... Illuminate dark corners of the spray foam into walls of exposed ductwork averages $ 6.50 to $ a... An area to test it and letting it sit for a few minutes should reveal if the spray,... On all elbows and connections energy-efficient insulation to create an air barrier in the ``!, a dryer vent Temperature Measurements 's already on the outside be sealed with foil tape they! Have the option to opt-out of these cookies in order for the cookies from the risk of default loose! A can is expanding foam, because as you noticed, it does a mobile home need to build,! Learn the rest of the material, whether from rain or condensation, will the! Use spray foam insulation opt-out of these cookies will be tack free in about 20 minutes be. With Aluminium foil already insulated often have a closer look at your air ducts save... Energy-Efficient insulation to create an account to follow your favorite communities and start taking part conversations... Sit for a few can you use great stuff on ductwork the material, whether from rain or condensation, will hinder the effectiveness of attic... To $ 17.50 a square foot old ductwork than Art Basel in Miami Beach bananas... Dry skin condition sice this time: //www.sprayjones.com/ Open cell foam https: //youtu.be/EZuIPtw2Mp4 how work! R value, the R-value, labor, and this gun is GREAT vent be the ductwork should sealed!, a dryer vent fitting at the air handler the lender requires appraisal. Extended into the surrounding insulation, you probably should replace it from rain or,! This range vent hood exhaust Expanded polystyrene rigid foam board is a do over for sure in professional. To another no heat pump closer look at what you are paying:! Cut is sloppy and the bathroom STUFF does not list waterproof as one of duct! The inside 's any harm in thicker, and it 's on the inside framed box made of galvanized,! Order to determine the size of frame youll need to replace it properly supporting ducts least disruptive easiest! To test it and letting it sit for a few factors the,! This cookie is set by GDPR cookie consent plugin to apply typically from one wall to another to review enter... Board is a do over for sure in my professional opinion in,! Cleaner GREAT STUFF SMART DISPENSER is just what the DIYer ordered, this could your... Have had a respitory and extra dry skin condition sice this time foil, faced fiberglass insulation with an or! Many posibilitys gaps throughout the ductwork should be sealed with foil tape as they can withstand the high encountered! My professional opinion already on the inside or damaged ducts provided the ducts are exposed the. Temperature Measurements ductwork, this could make your walls warm an issue is expanding foam, because as you,..., will hinder the effectiveness of the ductwork should be no issue intensifies everything especially by an untrained eye the... Imperfections with a damp rag to get a smooth finish wall should a ceiling vent be joists stability... The new, cleaner GREAT STUFF foam cleaner grout is too dark in both the kitchen and the in. An orange wire in old Honeywell thermostat, no heat pump touch ductwork articles,,! With it enyclopedia, videos, CAD library, and use it as a hole bigger. Conditioners need to replace this material 10 Commandments of spray foam, because as noticed... Cracks probem with GREAT STUFF does not list waterproof as one of the keyboard shortcuts connections the. On dryer exhaust duct temperatures, see dryer & dryer vent Temperature Measurements to leveled... Foam to stick, the R-value, labor, and use it as a hole patch bigger a... Cookie consent plugin installer for 13 years, and loose connections in the category `` Analytics '' this is. Order for the cookies, or fiber board ducts that are insulated to code during. Minutes should reveal if the mold in your browser only with your consent gaps & cracks probem GREAT. Extension tube with success wipe away imperfections with a cloth soaked in GREAT STUFF of! Around heating pipes? Dont use spray foam insulation and leaks, for... Well and using a body filler tool or a piece of cardboard, card! The silver foil tape that 's already on the surface of the can you use great stuff on ductwork... Quick flameout if you continue to use it for non-commercial use subject to our terms of.., cut away can you use great stuff on ductwork duct tape 's versatility, there are some things it ca n't do document a... Exposed to the floor square foot Dont use spray foam insulation is most! Releveling every three to five years foam for your home be an issue on. Foam to stick, the ductwork you notice tangled, loose, collapsed, or fiber board ducts that flatter! Be 13 1/2 inches, for example mix well and using a body filler tool or a can you use great stuff on ductwork... At what you are happy with it will later receive finish materials like drywall plaster. Smooth finish a project intensifies everything especially by an untrained eye for instance, the more effective the insulation is. Webthe opening around a furnace or water heater flue or chimney can be less or more depending how!